# CVE-2026-87828: Seraphinite Accelerator < 2.29.24 - Subscriber+ DoS via seraph_accel_State Update

> Authenticated subscribers can cause a denial of service in the WordPress admin area by exploiting a missing capability check in the Seraphinite Accelerator plugin.

- **Severity:** Medium 5.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 16 Sep 2026
- **Updated:** 17 Sep 2026
- **Also known as:** GHSA-pwq8-qxp8-42qc

## What is CVE-2026-87828?

CVE-2026-87828 is a medium-severity missing authorization vulnerability in Unknown Seraphinite Accelerator, published on 16 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The Seraphinite Accelerator WordPress plugin before 2.29.24 does not perform a capability check on one of its state-update AJAX actions, allowing authenticated users such as subscribers to write a malformed value that causes an uncaught error on every subsequent admin page load, making the entire admin area inaccessible to all administrators (denial of service).

Weakness: CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-87828?


## How do I fix CVE-2026-87828?

No fix has been published for CVE-2026-87828 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-87828 being exploited?

There is no known exploitation of CVE-2026-87828 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-87828 and fix it if it is affected.

What it is: CVE-2026-87828 is a medium-severity missing authorization vulnerability in Unknown Seraphinite Accelerator, published on 16 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-87828 in the wild and no public exploit code.

Affected product: Unknown Seraphinite Accelerator. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-87828/ (Markdown: https://insights.sbomify.com/CVE-2026-87828/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-87828
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-87828
- OSV: https://osv.dev/vulnerability/CVE-2026-87828

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-87828/
Summaries are generated and may contain mistakes; the official description above is the record.